Data Recovery Software for NAS Buffalo TeraStation TS51210RH6404: How to Choose the Best Option

Has your NAS Buffalo TeraStation TS51210RH6404 suddenly lost its network drive and you’re unsure what to do next? Did the RAID array collapse, making your files inaccessible? Is the device throwing errors during startup? Perhaps you accidentally rebuilt the RAID array or several hard drives failed at the same time?

Data Recovery Software for NAS Buffalo TeraStation TS51210RH6404: How to Choose the Best Option
Data Recovery Tool

Buffalo TeraStation TS51210RH6404 NAS Data Recovery in 2025

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from an TeraStation TS51210RH6404. We’ll walk through the most common causes of failure and demonstrate proven methods to restore files from a lost or degraded RAID array.

Data Recovery Software for NAS Buffalo TeraStation TS51210RH6404: How to Choose the Best Option

RAID Recovery™ 2.8
Recover data from damaged RAID arrays inaccessible from a computer.
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Why Regular Data Recovery Tools Can’t Restore Files from RAID

Conventional hard drives store user data by writing it sequentially across the disk surface, which means an entire file is typically located on a single drive. In contrast, when data is written to a RAID array, each file is split into multiple fragments. These fragments are then distributed and written in sequence across all the drives in the array. Depending on the configuration, fragment sizes can range from 2 KB to 2 MB, so every file is physically stored across several disks at once.

This approach significantly increases read and write performance — after all, writing two halves of a 1 GB file to two drives simultaneously is much faster than writing the full 1 GB to a single disk. However, this same mechanism makes file recovery far more complex.

Different RAID levels use different methods to distribute and protect data. On top of that, manufacturers like Buffalo often add their own proprietary structures and variations. As a result, data can be written to disks in many different formats, and each requires a specific approach during recovery.

Can the type of file system used on NAS Buffalo TeraStation TS51210RH6404 devices affect data loss risks?

Yes, the type of file system used on NAS Buffalo TeraStation TS51210RH6404 devices can affect data loss risks. Different file systems have different features and capabilities that can impact data integrity and recovery.

For example, some file systems like NTFS (used in Windows) and ext4 (used in Linux) have built-in journaling mechanisms that help protect against data corruption and ensure the file system remains consistent even in the event of a power failure or system crash. This reduces the risk of data loss in such scenarios.

On the other hand, file systems like FAT32 or exFAT do not have robust journaling mechanisms, making them more susceptible to data corruption and loss in case of unexpected interruptions or errors.

Additionally, the file system's ability to handle large file sizes, support for file permissions, and compatibility with different operating systems can also impact the risk of data loss.

It is important to choose a file system that aligns with your specific requirements and usage patterns to minimize the risk of data loss on NAS devices.

How to Remove Hard Disks from Your NAS and Connect Them to a PC

Although the NAS TeraStation TS51210RH6404 can be accessed over the network, you still need to remove its hard disks and connect them directly to a Windows PC. Only then can the recovery software properly scan and analyze the drives. Follow these steps:

  1. Power off the NAS and disconnect it from the power source.

    WARNING! Before removing any drives, carefully read the device manual. Improper actions may damage both the NAS enclosure and the hard disks in the RAID array.

  2. Remove the hard disks one by one, gently sliding each drive out of its slot. Remember that hard disks are highly sensitive: any impact or drop can cause serious physical damage.

  3. Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.

  4. Connect the drives to your computer. In this video, we explain which ports you can use to connect hard disks and what to do if your PC does not have enough free connectors.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

Hetman Raid Recovery

This program restores data from damaged RAID arrays and is fully compatible with Buffalo TeraStation TS51210RH6404. Each hard disk in the array contains technical metadata describing how files were written. When launched, Hetman RAID Recovery analyzes this metadata, automatically reconstructs the damaged array, and provides access to its contents. After that, you can browse the recovered disk and save your files. The program can also restore files that were accidentally deleted from the network drive.

Go to view
How to recover data from a Buffalo

How to recover data from a Buffalo

TeraStation TS51210RH6404 has 12 HDD slots, and it supports the following array types:

  • RAID 0;
  • RAID 1;
  • RAID 5;
  • RAID 6;
  • RAID 50;
  • RAID 60;
  • JBOD;

NAS supports:

  • exFAT, VFAT, FAT 12 / 16 / 32;
  • NTFS / ReFS;
  • APFS / HFS+;
  • Ext2 / 3 / 4 / ReiserFS / XFS / UFS / ZFS / Btrfs;
  • VMFS / HikvisionFS;

How to Safely Recover Data from Disk Images

This utility allows you to create a complete copy of a disk and work with the disk image instead of the physical drive. This approach helps protect your data from:

  • Overwriting during the recovery process;
  • Additional data loss caused by bad sectors;
  • User errors.

To create a disk image, follow these steps:

  1. Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.

  2. In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.

  3. When the Image Creation Wizard opens, select whether you want to save the entire disk or only a specific region. Adjust the settings and click Next.

    Hetman RAID Recovery: Image Creation Wizard

  4. Choose the directory where the image will be saved. You may select any available disk connected to your PC or upload the image via FTP.

    Hetman RAID Recovery: Choose a disk or save the image via FTP

Where Are the User’s Files Actually Stored?

The Buffalo TeraStation TS51210RH6404 network-attached storage keeps OS Linux operating system files on a separate RAID 1 (mirrored) array. Usually, all NAS systems create several volumes on every hard disk, and the first of them takes up to 2 Gb of space. This is where operating system files are stored. Other volumes are united into a RAID array where user’s data is written.

RAID Recovery Software: Detailed Comparison

Product Operating system RAID controller support Supported file systems Virtual RAID controller support Data recovery from damaged RAID File preview
Hetman RAID Recovery Windows, Linux, MacOS Yes, over 100 controllers FAT, exFAT, NTFS, ReFS, APFS, HFS+, Ext4, Ext3, Ext2, ReiserFS, Btrfs, VMFS, Hikvision, XFS, UFS, ZFS Yes Yes Yes
DiskInternals RAID Recovery Windows Yes, over 10 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
R-Studio Windows, Mac, Linux Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
UFS Explorer RAID Recovery Windows, Mac, Linux Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
EaseUS Data Recovery Windows Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
ReclaiMe Free RAID Recovery Windows Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes

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Comments (3)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 9.08.2022 12:31 #
    If you want to ask a question about data recovery, from NAS TeraStation TS51210RH6404, feel free to leave a comment!
    Reply
  • Chance Hather
    Chance Hather 2.09.2023 09:42 #
    Can data recovery from a NAS Buffalo TeraStation TS51210RH6404 device be done if the device is not booting or not starting up properly?
    Reply
    • Hetman Software
      Hetman Software 2.09.2023 10:59 #

      Yes, data recovery from a NAS Buffalo TeraStation TS51210RH6404 device can be possible even if the device is not booting or starting up properly. In such cases, it is recommended to contact a professional data recovery service provider. They have specialized equipment and expertise to recover data from malfunctioning NAS devices. They can diagnose the issue, repair the device if necessary, and retrieve the data from the storage drives. However, it's important to note that data recovery success depends on the severity of the issue and the condition of the storage drives.

      Reply
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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as xaker.ru, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.

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Questions and answers

  • What are the key settings that can be configured on the NAS Buffalo TeraStation TS51210RH6404?

    The key settings that can be configured on the NAS Buffalo TeraStation TS51210RH6404 are:

    1. RAID Configuration: The TeraStation TS51210RH6404 supports various RAID configurations such as RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, and JBOD. The RAID configuration determines how the hard drives are used for data redundancy and performance.
    2. Network Settings: You can configure the network settings of the NAS, including IP address, subnet mask, default gateway, DNS settings, and VLAN settings. These settings allow you to connect the NAS to your network and access it from other devices.
    3. User and Group Management: The NAS allows you to create and manage user accounts and groups. You can assign different access levels and permissions to users and groups, controlling their access to files and folders stored on the NAS.
    4. Shared Folders: You can create shared folders on the NAS and set access permissions for different users and groups. This allows you to share files and folders with specific people or groups within your network.
    5. Backup and Replication: The TeraStation TS51210RH6404 supports various backup and replication options. You can configure scheduled backups to external drives or other NAS devices, as well as enable replication to create redundant copies of your data on different devices.
    6. Security Settings: You can configure security settings such as enabling or disabling SSL/TLS encryption for secure data transfer, configuring firewall settings, and setting up access restrictions based on IP addresses or MAC addresses.
    7. Power Management: The NAS provides power management options, including scheduled power on/off, disk spin-down, and UPS (Uninterruptible Power Supply) support. These settings help optimize power usage and ensure data integrity during power outages.
    8. Notification Settings: You can configure email notifications for various events such as system errors, disk failures, or backup completion. This allows you to stay informed about the status of your NAS and take necessary actions promptly.
    9. SNMP Settings: The NAS supports SNMP (Simple Network Management Protocol), allowing you to monitor and manage the device remotely using SNMP-based network management software.
    10. System Updates: You can check for and install firmware updates for the NAS to ensure it has the latest features, bug fixes, and security patches.

    Note: The specific settings and configuration options may vary depending on the firmware version of the TeraStation TS51210RH6404. It is recommended to refer to the user manual or the web-based management interface of the NAS for

  • How can I access and modify the network settings on the NAS Buffalo TeraStation TS51210RH6404?

    To access and modify the network settings on the Buffalo TeraStation TS51210RH6404 NAS, you can follow these steps:

    1. Connect your computer to the same network as the TeraStation NAS.
    2. Open a web browser on your computer and enter the IP address of the NAS in the address bar. The default IP address for Buffalo TeraStation is usually "192.168.11.150", but it may vary depending on your network configuration. You can also find the IP address by checking your router's connected devices list.
    3. Press Enter to access the TeraStation's web interface.
    4. You will be prompted to enter the username and password for the NAS. The default credentials are usually "admin" for both the username and password. If you have changed the login credentials previously, enter the appropriate information.
    5. Once logged in, you will be in the TeraStation's web-based management interface.
    6. Look for the "Settings" or "Network" tab/menu in the interface. The exact location may vary depending on the firmware version.
    7. In the network settings, you will be able to modify various parameters such as IP address, subnet mask, gateway, DNS server, and other network-related configurations.
    8. Make the necessary changes to the network settings according to your requirements.
    9. After modifying the settings, click on the "Apply" or "Save" button to save the changes.
    10. The NAS may prompt you to restart or apply the changes. Follow the instructions provided.
    11. Once the changes are applied, the NAS will reboot and the new network settings will take effect.

    Note: It is recommended to have a basic understanding of networking concepts and be cautious while modifying network settings on any device. Incorrect network settings can result in loss of connectivity or other issues.

  • What are the recommended security settings for the NAS Buffalo TeraStation TS51210RH6404 to ensure data protection and prevent unauthorized access?

    To ensure data protection and prevent unauthorized access on the Buffalo TeraStation TS51210RH6404 NAS, you should consider implementing the following recommended security settings:

    1. Change Default Passwords: Immediately change the default administrator password to a strong and unique password. Also, create separate user accounts with strong passwords for accessing the NAS.
    2. Enable Access Control: Configure access control lists (ACLs) to restrict access to specific users or user groups. Only allow authorized users to access the NAS and its shared folders.
    3. Enable Firewall: Enable the built-in firewall on the NAS to block unauthorized access attempts from external networks. Configure the firewall to allow only necessary network services and ports.
    4. Update Firmware: Regularly update the NAS firmware to ensure security patches and bug fixes are applied. Check for updates on the manufacturer's website or enable automatic firmware updates if available.
    5. Disable Unnecessary Services: Disable any unnecessary services or protocols on the NAS that are not required for your specific use case. This reduces the attack surface and minimizes potential vulnerabilities.
    6. Enable HTTPS: Access the NAS web interface over HTTPS (secure HTTP) instead of HTTP. This encrypts the communication between your browser and the NAS, protecting sensitive information.
    7. Enable Two-Factor Authentication (2FA): If supported, enable 2FA for user authentication. This adds an extra layer of security by requiring a second form of verification, such as a code sent to a mobile device, in addition to the password.
    8. Regular Data Backup: Implement a regular backup strategy to ensure data redundancy and protection against data loss. Consider using RAID configurations, off-site backups, or cloud storage for additional data protection.
    9. Disable Remote Access: If remote access to the NAS is not required, disable it completely to prevent unauthorized access attempts from external networks.
    10. Regularly Monitor Logs: Monitor the NAS logs for any suspicious activities or unauthorized access attempts. Enable email notifications for critical events to stay informed about potential security breaches.

    It's important to note that these recommendations provide a general guideline for securing the NAS, but it's always advisable to consult the manufacturer's documentation and follow best practices specific to your environment.
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